North Guang Jingyi / All Precision Instrument
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| Brand | North Guang Jingyi / All Precision Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | BEST-121 |
| Test Voltage Range | 10 V / 50 V / 100 V / 250 V / 500 V / 1000 V |
| Resistance Measurement Range | 1×10⁴ Ω to 1×10¹⁸ Ω |
| Current Measurement Range | 2×10⁻⁴ A to 1×10⁻¹⁶ A |
| Basic Accuracy | ±1% |
| Display | Digital LCD |
| Dimensions | 285 mm × 245 mm × 120 mm |
| Weight | ~5 kg |
| Compliance | GB/T 1410–2006, GB/T 10581–2006, GB/T 1692–2008, GB/T 2439–2001, ASTM D257–99, IEC 93:1980 (equivalent), EN 1149-1:1995, SJ/T 10694–2006 |
| Brand | North Guang Jingyi / All Precision Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | BEST-121 High-Resistance Meter |
| Max. Resistance Range | 1×10⁴ Ω to 1×10¹⁸ Ω |
| Test Voltage Options | DC 10 V, 50 V, 100 V, 250 V, 500 V, 1000 V |
| Current Measurement Range | 2×10⁻⁴ A to 1×10⁻¹⁶ A |
| Input Impedance | >10¹⁵ Ω |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Power Consumption | ~10 W |
| Operating Temperature | 0–40 °C |
| Relative Humidity | ≤70% RH |
| Dimensions (L×W×D) | 355 mm × 320 mm × 145 mm |
| Weight | ~6 kg (main unit) |
| Compliance | Q/TPGG 7–2008 (enterprise standard), GB/T 1410–2006, GB 1672–8, GB/T 22042–2008, GB/T 22043–2008, GB/T 18864–2002, GB/T 12703.6–2010, GJB 3007A–2009 |
| Brand | North Guang Jingyi / All Precision Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | GDAT-A |
| Display | VFD Dot-Matrix (Full Chinese UI) |
| Interface | RS232 Serial Port |
| Printer | Integrated Thermal Printer (Chinese Output) |
| Frequency Range | 100 kHz – 160 MHz |
| Q Factor Range | 1–1023 (Auto/Manual Range: 30 / 100 / 300 / 1000) |
| Inductance Measurement | 1 nH – 140 mH |
| Capacitance Direct Measurement | 1 pF – 25 nF |
| Main Capacitor Tuning Range | 17 pF – 240 pF |
| Capacitance Accuracy | ±1 pF (<150 pF), ±1% (>150 pF) |
| Test Signal Source | Synthesized RF Oscillator (100 kHz–160 MHz) |
| tanδ Resolution | ≤4×10⁻⁴ @ 1 MHz (with supplied fixture) |
| Electrode Options | Φ38 mm or Φ50 mm parallel-plate |
| Liquid Cell | 48 mm diameter × 7 mm depth |
| Standard Accessories | LKI-1 Inductor Set (10 values: 0.05 µH to 10 mH), dielectric test fixture, host unit |
| Compliance | GB/T 1409–2006 (equivalent to IEC 60250:1969 for εᵣ and tanδ measurement at power/audio/radio frequencies) |